With a final call of his campaign mantra "Yes We Can," President Barack Obama urged Americans on Tuesday to stand up for U.S. values and reject discrimination as the United States transitions to the presidency of Republican Donald Trump.

In an emotional speech in which he thanked his family and declared his time as president the honor of his life, Obama gently prodded the public to embrace his vision of progress while repudiating some of the policies that Trump promoted during his campaign for the White House.

"So just as we, as citizens, must remain vigilant against external aggression, we must guard against a weakening of the values that make us who we are," Obama told a crowd of 18,000 in his hometown of Chicago, where he celebrated his election in 2008 as the first black president of the United States.